IGN: Ratchet and Clank: Size Matters Cheats, Codes and Cheat Codes

Pokitaru
Train Faster: Complete the "training" portion of Pokitaru under 1:32.
Don't Rock the Boat: Complete the boat challenge on Pokitaru without taking a hit.
Do Cows Get Crabby: Turn 26 crabs into cows with the Mootator or Armoogeddon.

Ryllus
Bury the Pygmies: Get Bury Blossoms to eat at least 4 Pygmy Tribesmen.
Lights, Camera, Action!: Kill 10 floating cameras.
Ship It: Break all the crates on the level.

Kalidon
Explosive Ordnance Disposal: Clear all the remote bombs in the Gravity Boot sphere.
Super Lombax: Kill 25 enemies in a row without getting hit.
Be A Cool Skyboarder: Win a Skyboarding race without using boost.

Metalis
Shutout: Win a Gadgebot Toss challenge without letting any opponent score.
Terror of the Skies: Get over 600 points in the Giant Clank Challenge (950 in Challenge Mode).
Ultimate Gladiator: Complete all Clank Arena challenges.

Dreamtime
Friends Don't Hurt Friends: Get through the Giant Clank fight without getting hit.
Night Terrors: Defeat the waves of enemies on the last island under 45 seconds.

Medical Outpost Omega
Be An Awesome Skyboarder: Beat the master challenge under 3:25.

Challax
Take Them Down A Shock: Kill 23 Shock Troopers without dying.
High Tech Weapons Master: Beat the enemy segment without using the Lacerator, Acid Bomb Glove, Concussion Gun, Shock Rocket, Laser Tracer, Sniper Mine, or RYNO.
No More Varmints!: Get Over 1535 points in the Giant Clank challenge (2000 in Challenge Mode).

Dayni Moon
Ultimate Gladiator: Complete all Clank Arena challenges.
Wool Protest: Complete level 8 without killing any Angry Rams.
Bouncy, Bouncy, Bouncy: High jump on a bouncy plant 10 times in a row.

Inside Clank
Not the Shock of Me Now: Don't get hit at all while inside Clank's head.
Ratchet... Just Ratchet: Beat the enemy segment using only the wrench.

Quodrona
Elite Annihilation: Defeat over 70 Elite clones during the Elite clone fight.
Storm the Front: Complete the enemy portion of level 10 under 1:45.

Submitted by Denis Crazygamer

Hint - Titanium Bolts!

Titanium bolt in Ryllus

When you are at the mysterious wall go backwards and turn your camera around, There should be a titanium bolt there. This should be after you use the launcher mimic plant for the second time. Alternate -- go down the flight of stairs, kill the little guys and head out of that area. At the next door, there's another flight of stairs leading up to the bolt.

Titanium bolt in Dayni Moon

Ater the area with the sheep and the robot with the really big gun for the first time there should be a farmhouse with two mimic plants, one light blue and one purple. If it is day, water the blue one, careful there are sheep inside. After you kill all the sheep plant the blue one, while it's day, on the farthest electro-soil patch. Next water the puple one and put it on to the closest electrosoil patch. This should make two flowers with spirals under them. Jump on the shorter one and then to taller one. Finally give a quick jump on the taller one and press and hold X. Try to land on top of the farmhouse and you should end up in a tunnel. At the end of the tunnel should be the bolt.

Titanium Bolt on Pokitaru

When you go onto the second boat after the crab island, there are two pieces of land with robots. On the second piece of land, jump off and head towards the side of the building to your left. There's a bolt on a narrow strip of land.

When you arrive at the zipline, get on the platform under the zipline. From there, move your camera so you can see what is on your left side. You should see a platform with the bolt on it. A double jump should clear the gap and let you nab the bolt.

Titanium Bolt on Medical Outpost Omega

Locate the area where you to do the wall jumps. At the top of that particular section, look at the grind lock. Spin around 180 degrees and the bolt should be there.

Titanium Bolt in Clank's Head

At the start of the course, use the zipline going down. Once you land, turn around to face the stairs going back up to the stage's starting spot. Go around those stairs and you will see a platform leading to the bolt.

Titanium Bolt in Challax

Head into the city and after passing by the first purple electro-fence, turn to the left and there is a a baggage claim or conveyor device. Wait there for a little while until the bolt appears.

Go to the spot where you need to destroy the statue of Otto using a mimic plant. Work around to the other side of the plant and launch a bomb at the walls using the wrench. A secret wall conceals the hidden bolt.

Titanium Bolt in Dreamtime

When you reach the hangar with the first mirror, do not go into the hangar yet. There're some bars nearby you can jump through for the bolt.

Towards the end of the stage, near the gadgetron vendor is a portal exit (a black hole). Crouch and toss the wrench past the portal (at the bolt) and get teleported to a new area where you need to jump across breakable boxes for the prize.

Titanium Bolt in Kalidon

On the left side of your ship, go to the edge and press SELECT. You should be able to find the bolt in a crater.

The first place in the stage when the shrink ray is used, go around the left pillar (at the doorway) and bolt get.

Submitted by judowarrior2000, Tyler Mindmaniac, Plo Keen, Eduardo Marino, Amarjit Singh